TankBuddy is an app for aquarium monitoring and maintenance. Easily record pH, ammonia, temperature, and water changes. See instantly which tanks are past due for a water change. Record notes for each individual tank. Track pH levels over time with dated logs.

TankBuddy has a fun interface and options for Gallons/Liters, Celsius/Fahrenheit, and custom color-coding for pH and NH3/NH4 readings.